Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Slow electromagnetic wave guided in subwavelength region along one-dimensional periodically structured metal surface
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
KTH, School of Information and Communication Technology (ICT), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.
2007 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 90, no 20, 201906- p.Article in journal (Refereed) Published
Abstract [en]

A perfect electric conductor surface with one-dimensional periodic rectangle holes is proposed as a surface-plasmon-like waveguide, where designed surface plasmon modes with very low group velocity are confined in a subwavelength region. It is shown that the half maximum of electric field intensity of the mode can be confined in a 0.20 lambda x0.10 lambda subwavelength region on the transversal plane and the group velocity approaches to zeros, where lambda is the wavelength in vacuum.

Place, publisher, year, edition, pages
2007. Vol. 90, no 20, 201906- p.
Keyword [en]
Electric conductors; Electromagnetic waves; One dimensional; Periodic structures; Surface plasmon resonance; Waveguides; Metal surface; Rectangle holes; Subwavelength region; Surface plasmon; Wavelength
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:kth:diva-7664DOI: 10.1063/1.2740174ISI: 000246623500030Scopus ID: 2-s2.0-34249006646OAI: oai:DiVA.org:kth-7664DiVA: diva2:12760
Note
QC 20100817Available from: 2007-11-20 Created: 2007-11-20 Last updated: 2012-03-21Bibliographically approved
In thesis
1. Dispersion Engineering: Negative Refraction and Designed Surface Plasmons in Periodic Structures
Open this publication in new window or tab >>Dispersion Engineering: Negative Refraction and Designed Surface Plasmons in Periodic Structures
2007 (English)Doctoral thesis, comprehensive summary (Other scientific)
Abstract [en]

The dispersion property of periodic structures is a hot research topic in the last decade. By exploiting dispersion properties, one can manipulate the propagation of electromagnetic waves, and produce effects that do not exist in conventional materials. This thesis is devoted to two important dispersion effects: negative refraction and designed surface plasmons.

First, we introduce negative refraction and designed surface plasmons, including a historical perspective, main areas for applications and current trends.

Several numerical methods are implemented to analyze electromagnetic effects. We apply the layer-KKR method to calculate the electromagnetic wave through a slab of photonic crystals. By implementing the refraction matrix for semi-infinite photonic crystals, the layer-KKR method is modified to compute the coupling coefficient between plane waves and Bloch modes in photonic crystals. The plane wave method is applied to obtain the band structure and the equal-frequency contours in two-dimensional regular photonic crystals. The finite-difference time-domain method is widely used in our works, but we briefly discuss two calculation recipes in this thesis: how to deal with the surface termination of a perfect conductor and how to calculate the frequency response of high-Q cavities more efficiently using the Pad\`{e} approximation method.

We discuss a photonic crystal that exhibits negative refraction characterized by an effective negative index, and systematically analyze the coupling coefficients between plane waves in air and Bloch waves in the photonic crystal. We find and explain that the coupling coefficients are strong-angularly dependent. We first propose an open-cavity structure formed by a negative-refraction photonic crystal. To illuminate the physical mechanism of the subwavelength imaging, we analyze both intensity and phase spectrum of the transmission through a slab of photonic crystals with all-angle negative refraction. It is shown that the focusing properties of the photonic crystal slab are mainly due to the negative refraction effect, rather than the self-collimation effect.

As to designed surface plasmons, we design a structured perfectly conducting surface to achieve the negative refraction of surface waves. By the average field method, we obtain the effective permittivity and permeability of a perfectly conducting surface drilled with one-dimensional periodic rectangle holes, and propose this structure as a designed surface plasmon waveguide. By the analogy between designed surface plasmons and surface plasmon polaritons, we show that two different resonances contribute to the enhanced transmission through a metallic film with an array of subwavelength holes, and explain that the shape effect is attributed to localized waveguide resonances.

Place, publisher, year, edition, pages
Stockholm: KTH, 2007. xi, 74 p.
Series
Trita-ICT/MAP, 2007:11
Keyword
photonic crystal, dispersion property, negative refraction, surface plasmon polariton, designed surface plasmon, negative index material, layer-KKR method, finite-difference time-domain method, plane wave method, subwavelength imaging, open cavity, enhanced transmission, slowing light
National Category
Telecommunications
Identifiers
urn:nbn:se:kth:diva-4542 (URN)
Public defence
2007-12-07, sal D, Forum, Isafjordsgatan 39, Kista, Stockholm, 10:00
Opponent
Supervisors
Note
QC 20100817Available from: 2007-11-20 Created: 2007-11-20 Last updated: 2012-03-21Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopusApplied Physics Letters

Search in DiVA

By author/editor
Ruan, ZhichaoQui, Min
By organisation
Microelectronics and Applied Physics, MAPZhejiang-KTH Joint Research Center of Photonics, JORCEP
In the same journal
Applied Physics Letters
Telecommunications

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 140 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf